@misc{indiciae7f0a5e61fe27, title = {Intravaginal immunization in sheep using a bioadhesive microsphere antigen delivery system.}, author = {D T O'Hagan and D Rafferty and S Wharton and L Illum}, year = {1993}, doi = {10.1016/0264-410x(93)90313-m}, url = {https://pubmed.ncbi.nlm.nih.gov/8322490/}, note = {Source identifier: 8322490} }